I think there is a distinction, though, between taking advantage of a benefit that the resort is offering, and trying to manipulate the resort into offering you a limited-availability benefit typically intended to compensate guests for actual damages incurred. There are many examples where unsavory tactics used by some guests have invariably forced implementation of policy changes that adversely affect all guests, as well as the resort.
Even before such loop-holes are closed, there are negative ramifications for the general public. The emotional energy needed to deal with the public shouldn't be trivialized and wasted via manipluation. When emotional energy is expended in reaction to the CM being misled in the manner being discussed, it saps some of that CM's ability to provide the same level of quality service for the rest of their shift. So basically, it's a form of unjust enrichment.
Calling manipulation "using tools" does make it seem more palatable, but is really just another subtle deception, making those actions sound more attractive to good folks like you, highlander. It highlights the slippery-slope associated with defending such tactics.
Those are the reasons why so many people react so negatively to advocacy of such tactics. It is a little like the guy hiking through a national forest who doesn't see the harm in littering. After all, since the litter is behind him, it doesn't detract from his personal experience, and since the forest is so isolated, he'll never get caught. Yet, his action affects us all negatively, anyway. There is a big push in this country to safeguard our national standard of personal accountability and integrity, which seems to be declining sharply. While individual actions such as those we are discussing here seem to be only minor contributors to that decline, or even tangential to it, the impact is still significant, when taken together with all such actions.